3816108

Information

• Patent Grant
• 3816108

• References
• Source

• Patent Number

  3,816,108

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1974
  50 years ago

• CPC

  • H04R21/021 - with granular resistance material

• US Classifications

  • 420 - Alloys or metallic compositions